.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.15);
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
} 